October 2021 0 21 Report
помогите умоляюю!!!!!! 1)  найдите tg a, если cos a =1/6 и угол a прнадлежит четвертой четверти: варианты 1) 5/6, 2)корень из 7, 3) минус корень из 33, 4) минус корень из 13   2) решить уравнение 2sin x/4*cos x/4 -1=0
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